Thanks Georgeinbandon,oregon. You gave more or less the answer I expected, sadly.
May I ask another?
The bug that is making such a mess of my eucs - two perhaps. One that has a tell tale woolly covering and on other eucsa gnarled effect at the end of evry branch.... What can I do about it?
(last time I sprayed them with an 'all in one' I ended up killing half a dozen young plants!)
I definately need to de-bug the greenhouse this year